Update voltha components in release matrix grid

Change-Id: I9cc271fb8b3610eb8ef2039408a0276fee73b602
diff --git a/howto/release/repositories/voltha-docs/index.rst b/howto/release/repositories/voltha-docs/index.rst
index 2a7f02b..ef6d1fb 100644
--- a/howto/release/repositories/voltha-docs/index.rst
+++ b/howto/release/repositories/voltha-docs/index.rst
@@ -1,5 +1,4 @@
-Repository: voltha-lib-go
-=========================
+Repository: voltha-docs
 
 .. toctree::
    :maxdepth: 1